Properties of Colloids — Predicted 2026

AI-Predicted Question Angles for UPSC 2026

Based on trend analysis, current affairs, and recurring themes in Properties of Colloids.

Application of Schulze-Hardy Rule with complex ions

high

NEET often tests the application of rules with slightly more complex examples. Instead of simple $Na^+$, $Mg^{2+}$, $Al^{3+}$, questions might involve complex ions like $[Fe(CN)_6]^{4-}$ or $PO_4^{3-}$ for a positively charged sol. Students need to correctly identify the charge and valency of these polyatomic ions to apply the Schulze-Hardy rule. This tests a deeper understanding beyond rote memorization of common examples, requiring students to break down the electrolyte into its constituent ions and determine their valency.

Distinguishing between electrophoresis and electro-osmosis

medium

These two electrokinetic phenomena are often confused due to their similar contexts (movement in an electric field). A question might present scenarios and ask students to identify which phenomenon is occurring or to state a key difference. This tests precise definitional understanding and the ability to differentiate between closely related concepts. For example, a question might describe an experiment where the dispersion medium moves while particles are fixed, and ask for the name of the phenomenon.

Factors affecting the intensity of Tyndall effect or Brownian movement

medium

Beyond just knowing what the Tyndall effect and Brownian movement are, NEET could delve into the factors that influence their intensity. For the Tyndall effect, this includes the difference in refractive indices and particle size relative to wavelength. For Brownian movement, factors like particle size, viscosity of the medium, and temperature are important. Questions could be scenario-based, asking how changing one of these factors would affect the observed phenomenon, requiring a deeper conceptual grasp.